Rolling-mill



3 Sheets-Sheet 1. J. S. WORTH.

ROLLING MILL.

(No Model.)

Patented Oct. 12,1897.

YN; Noun-s Evans co. Pncraumu.. WASHINGTON. o. c.

(No Model.)l 3 Sheets-Sheet 2.

J. S. WORTH.` ROLLING MILL.

110.591,713. Patented Oct. 12,1897.

las

r .s W12? 3v Sheets-Sheet 3. J. S. WORTH.

ROLLING MILL.

(No Model.)

N0.591,713.. Patented Oct. 12,1897.A

UNTTEDl STATES PATENT OFFICE.

JOHN SdW'ORTII, OF COATESVILLE, PENNSYLVANIA.

vROLLING-MILL.

SPECIFICATION forming part of Letters Patent No. 591,713, dated October12, 1897. Application filed November 21, 1.896x Serial No.y 612,963. (No model.)

T0 all whom it may concern:

Be it known that I, JOHN S. WORTH, a citizen of the United States, and aresident of Ooatesville, Pennsylvania, have invented certainImprovements in Rollin g-Mills, of which the following is aspecification.

My invention relates to certain improvements in releasing devices forrolling-mill rolls.

The object of my invention is to provide means whereby the upper rollcan be released immediately in case of an accident, such as when a plateor other shape sticks between the rolls.

In the accompanying drawings, Figure lis a side view of therolling-mill. Fig. 2 is a View of the upper portion of the rolling-mill,showing part in section; and Fig. 3 is a seotional plan view on the line3 3, Fig. 2.

A A are the housings of the rolling-mill, which in the present instanceis termed a three-high rolling-mill.

B is the lower roll, B the upper roll, and B2 the intermediate roll.These rolls are adapted to suitable boxes. The upper roll B rests in abox b', which is supported by the vertical rods b2, extending to thelower portion of the housing, and each of these rods is connected to theshort arm of a weighted lever B3, so that the weight of the upper rollis carried mainly by thelevers. Hydraulic cylinders or springs may beused as full equivalents of the levers when necessary.

C C are the housings for the drivers of the driving-gears C C2 C3, whichare connected to their respective rolls by spindles E E E2 in theordinary manner or by omitting the spindle E2, as is often done, themiddle roll running by the friction against the top or bottom roll.

a d are the screws mounted in theheads of the housingsA A for regulatingthe distance between the rolls.

Mounted on the journal-box of the upper roll B are the half -boxes b3,provided with circular liners b5, fitted to their concave surfaces, onwhich rest the projecting ends d d of the frame D, and on the frame arewedges F F, supporting the block b4, against which the screws CL bear,so that as the screws are turned down pressure will be applied throughthe parts above mentioned to the roll B', but

should the metal being rolled stick through any cause by simplywithdrawing the wedges the upper or second roll will be released, so asto allow the metal to pass through. In case the wear on the journals orboxes should be unequal or tend to tip the boxes b3 the liners b5 willturn in their seats, so as to present at all times level bearings forthe ends d of the frame D.

The wedges at each side are connected to a head G by rods g g, and thishead is secured to the end of the piston-rod G of a piston G, adapted toa cylinder D', mounted on a frame D. The steam, air, gas, water, orother liquid, as desired, is admitted to the cylinder through thejointed pipes g' g2, which are connected to suitable valvedduid-pressure pipes, so that on turning the valves the piston G will beraised and the wedges will be withdrawn a certain distance to allow theroll or rolls to be elevated, after which the valves may be reversed andthe piston and the wedges forced back and securely held in position.Screws d at each end of the frame D limit the outward movement of thewedges, thereby keeping all lost motion out of the connectingrod jointswhile the wedges are in place.

The surfaces of the frame D on which the wedges travel are preferablylined with hard metal, as shown in Fig. 2, and the frame D is made intwo parts, (in the present instance bolted together,) and the wedges arecoupled to the head G by two rods g g at each side, although in someinstances a single rod may be used.

In order to relieve the upper roll of the weight of the frame D, Iprovide lever mechanism oneach side of the frame composed of two bars II', which are coupled together at t' and rest upon vertical rods z",which extend through openings in the upper half of the box of the roll Band rest upon the lower half of the box, being, in fact, continuationsof the bars b2, so that the weight of the frame is carried by the leversB3 or theirl equivalents as the frame D rests at on each side upon oneof the side bars I. A plate cl2 holds the bar I in position. Thepivot-pin 7l can be forced in any one of the holes in the bars I I', soas'to regulate the leverage.

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In order to counterbalance the frame D to Y lever mechanism out beyondthe housings The weight of the frame is balanced to a ce'rlevers arehung in the middle atj' to a saddle J', which passes under the middleofthe upper spindle. The other end of this lever .I is connected by arod L7'2 to a projecting fixed bar J2, mounted on the housings C C, sothat the rods i form fulcrums for the levers I I'.

tain extent by the spindle E' through the medium of the lever mechanismdescribed. Thus a twofold Object is attained-that is, relieving therolls of the weight of the frame D and the proper supporting of thespindle E' at all points of its travel up and down with i tsconnecting-roll. When the spindle is proportionately heavier or wheremore weight may be allowed to rest on the journals of the roll B', thecompound lever I I' may be re-k placed by the simple lever I',lengthened sufiiciently to extend under the supporting-point a: of theframe D and resting upon its fulcrum i' in the one housing only. Thelower portion of the frame D may be lled with Oil or any properlubricant to a point above the wedges F, thereby guaranteeing theirperfect lubrication at all times.

I claim as my invention l. The combination in a rolling-mill, of thehousings, the rolls, bearing-boxes for the rolls, adjusting mechanism, aframe resting upon the upper boxes of the upper roll,wedges interposedbetween the frame and the adjusting mechanism, with means forwithdrawing the Wedges, substantially as described.

2. The combination in a rolling-mill, of the housings, the rolls,bearingboxes for the rolls, a frame mounted on the upper boxes of theupper roll, a block above the frame, adjustingscrews, wedges mountedbetween the frame and the blocks, a uid-cylinder mounted on the frame,and a piston therein connected to the wedges, substantially asdescribed.

3. The combination of the housings, the rolls, the lower boxes for theupper roll, mechanism for supporting these boxes independent of thelower rolls, a frame mounted above the upper rolls and supported by thelower boxes of the said upper roll, wedges carried by the frame andmeans for withdrawing the wedges and adjusting mechanism for regulatingthe distance between the rolls, substantially as described.

4. The combination of t-he housings, the rolls, boxes for the upperroll, means for supporting said boxes independently of the lower rolls,a frame extending over the boxes of the Y upper roll, levers adapted tocarry said frame, bars on which said levers rest, said bars extending tothe lower boxes of the upper roll, bearing blocks, adj usting screws,wedges mounted between the bearing-blocks and the frame, a cylinder, apiston and its rod, and' rods connecting the levers to the head of thepiston-rod, substantially as described.

5. The combination of the housings, the

rolls, a frame supported above the rolls and having means for releasingthe rolls in thel 6. The combination of the roll-housings A, c

the rolls mounted thereon, a frame D having wedges, a cylinder, itspiston connected to the said wedges, means for controlling the ow ofiiuid into the cylinder and compound levers I, I', at each side of theframe resting upon the boxes of the upper roll, a spindle E', a saddleJ' therefor, two levers mounted on the saddle one arm of each leverbeing connected to a lever I', the other arm being connected to a fixedpoint, substantially as described.'

7. The combination of the roll-housings A, the rolls mounted thereonwith suitable boxes and supports, a frame D resting on the upper boxesof the upper rolls having means for releasing the rolls and the line b5between the frame D and the top box b3, substantially as described.

l8. The combination of the roll-housings, rolls mounted thereon, boxesfor the rolls, the upper boxes of the top rolls having confaved uppersurfaces, circular liners resting in the concaves of the said boxes, aframe mounted on the liners, wedges on the frame, means for moving-saidwedges withV adjusting mechanism above the wedges, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN s. WORTH.

W'itnesses:

OLIVER G. JACKSON, W. l). JACKSON.

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